Flyff(mmo download but good), Club Penguin, moshi monsters or kidscom.
You may also like http:///www.zisboombah.com
cyberinfants.com
Yes, there are three good games for kids that i approve of like, Dizzywood.com, woozworld.com, and moviestarplanet.com
Virtual families for iPod iTouch and iPad.
Moviestarplanet.com
Neopets is a good virtual pet game.
Xeko is an online site that kids can create their own virtual elf. You can design your elf and play games to do good in the real world.
some good games are minniclip clubpenguin fantage kidsworld ggg =girlsgogames king.com and one that is not is bored.com your welcome
There are lots of virtual worlds for kids. :club penguin,barbie.comwooz worldbritchicksmiss bimbostardollrunescapeourworldzwinky
jumpstart and kunfu panda world.
www.clubpenguin.com
Probably the top ten virtual world games!SmallworldsBinweevilsclub penguinmoshi monstersWebkinzPandandamydinosStardollIMVUPoptropica
MoshiMonsters.com ClubPenguin.com